Overhead supported traveling saw wood-sawing machine



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OVERHEAD SUPPORTEDTRAVELING SAW WOOD-SAWING MACHINE Fil'ed April 24,1944 Pa'tented Nov. 4, 1947 OVERHEAD SUPPORTED TRAVELING SAW WOOD-SAWINGMACHINE Sidney C. P. Poole, Raleigh, Tenn.

Application April 24, 1944, Serial No. 532,481

1 Claim.

The present invention relates to new and useful improvements inwoodworking machines, and more particularly to a simplied structureembodying a driven saw and means for manipulating the saw over thesurface of the work, either for cutting lumber or for dadoing, scarng,rabbeting at a desired depth and for other surface cutting of the work,

An important object of the present invention is to provide a frame fromwhich the saw is suspended and including a track having a carriageadapted to travel thereon and to which the saw is attached, togetherwith means for the vertical adjustment of the saw to regulate the depthof the cut.

It is also an important object of the present invention to providecontinuous drive means for the saw while the latter is moved over thework.

A further object is to provide an apparatus of this character of simpleand practical construction, which is efficient and reliable inperformance, relatively inexpensive to manufacture and operate, andotherwise well adapted for the purposes for which the same is intended.

Other objects and advantages reside in the details of construction andoperation as more fully hereinafter described and claimed, referencebeing had to the accompanying drawing forming part hereof, wherein likenumerals refer o like parts throughout, and in which:

Figure l is a side elevational view.

Figure 2 is a top plan view.

Figure 3 is a vertical sectional view taken substantially on a line 3-3of Figure 1.

Referring now to the drawing in detail, wherein for the purpose ofillustration I have disclosed a preferred embodiment of the invention,the numerals 5 and 6 designate a pair of spaced parallel trackssupported in an elevated position by posts I and 8 and to the upper endsof which one end of the tracks are attached. Braces 9 are provided foreach of the tracks and extend from the lower portions of the posts to anintermediate portion of the track to maintain the same in a rigidposition.

A base I extends from the bottoms of the posts l and 8 in a directionopposite from the track, the b-ase including a platform II on which anelectric motor I2 is supported, the motor driving a sectional shaft I3journaled in bearing I4 secured on the platform II.

The tracks and 6 are preferably constructed of angle iron and eachincludes an inwardly extended horizontal flange I5 on which a carriageI5 is adapted to travel by means of upper and lower rollers I'I and I8engaging the upper and lower surfaces, respectively, of the flanges I5of the tracks.

The carriage I5 includes a pair of tubular legs I9 having extensions 20slidably carried in the lower portions of the legs and adjustablerelative thereto by a hand-operated feed stem 2l.

Bearings 22 are formed on the lower ends of the extensions 20 and inwhich a shaft 23 is journaled, the shaft having a circular saw 2lisecured at one end thereof.

A frame designated generally at 25 is composed of a pair of front spacedparallel arms 2B pivotally connected at their front ends to the shaft 23and a Vpair of rear spaced parallel arms 2l pivotally connected to therespective front arms 26 at their rear ends by a pin 23. The rear endsof the rear arms 21 are pivotally supported on the shaft I3.

A drive pulley 29 is secured to the shaft I3 while a double pulley 30 isfreely mounted on the pin 28 and a pulley 3I is secured to the shaft 23.

A belt or other flexible drive member 32 operatively connects the pulley29 with the pulley 30 while a similar flexible drive member 33operatively connects the pulley 3D with the pulley 3 I.

The shaft I3A is driven by the motor I2 and power is thus transmitted tothe saw 2li through the drive members 32 and 33.

The saw 24 is adapted to travel along the surface of the work by meansof the carriage I 6 mounted on the tracks 5 and 6 and the frame 25 maybe raised or lowered, as indicated by the dotand-dash lines in Figure 1of the drawing in accordance with the movement of the saw 2A from oneedge of the work toward the other edge thereof.

The depth of the cut made by the saw 2d may be regulated by the verticaladjustment of the eX- tensions 2U in the legs I9.

It is believed that the details of construction, operation andadvantages of the device will be readily understood from the foregoingwithout further detailed explanation.

vHaving thus described the invention, what I claim is:

In a woodworking machine, a base, a pair of spaced Vertical posts risingfrom one end of the base, a pair of spaced overhead horizontal trackseach extending from the upper end of one of the posts and in bracedrelation thereto, a carriage suspended from the tracks and guidedthereby against movement away from the tracks, a pair of parallel spacedtubular members depending from the carriage, a horizontal memberconnectried on the driven shaft between the slidable members, a saw onone end of the driven shaft and outwardly of one of the slidablemembers, a frame pivotecl with one end on the driven shaft between theslidable members, a second frame pivoted to the other end of the firstframe, a pair of pulleys on the pivotal connection between the twoframes, a exible connection between the pulley on the driven shaft andone of the pulleys on the pivotal connection between the frames, a motoron the base and having a shaft journaled on the base and forming apivotal support for the other end of the second frame and carrying apulley, a second exible member connected to the other pulley on thepivotal connection between the two frames and to the pulley on the motorshaft.

SIDNEY C. P POOLE.

REFERENCES CITED The following references are of record in the le ofthis patent:

UNITED STATES PATENTS Number Name Date 422,332 Bronson Feb. 25, 1890987,747 Scheck Mar, 28, 1911 1,189,603 Mchener July 4, 1916 1,699,582Breidenbach Jan, 22, 1929 1,373,864 Carlson Apr. 5, 1921 13,305 FulghumJuly 24, 1855 1,725,295 Orr Aug, 20, 1929 McCarroll May 16, 1933

